Sonja Olive

"Aah! Sorry, I didn't mean to doze off like that!" -Sonja Olive, My Gift To You

Sonja Olive was a young, brown-haired woman who lived in Victoriaville and was the receptionist for the town's own Olive Inn. However, after a dimension-hopping ritual went horribly wrong, she was found lifeless in the basement of Olive Inn, surrounded by random knick-knacks and dead candles. However, instead of the Afterlife, her soul went to an unknown dimension.

Personality
Sonja Olive was a kind-hearted, gentle and caring person. She could often be scatterbrained, but she made up for it to many customers with charm and cuteness. She could often be seen as very happy, albeit shy. However, when under the curse of Doubt, it revealed that deep down, she was just very miserable and hollow.

Reveal of a Multiverse
Sonja is actually the same Sonja from Sonic's Hourglass, a Sonic the Hedgehog fanfiction by the same author as My Gift To You. At the end of Sonic's Hourglass, she was torn from Sonic's time. However, due to her presumably not having a time to go back to on account of her being dead, she was reborn in the My Gift To You universe, specifically in Victoriaville. In this scene, Sonic's Hourglass even gives an in-depth description of Victoriaville that is identical to how it is portrayed in My Gift To You.

Similarly, in the first epilogue of My Gift To You, Sonja reveals that Lo had given her a golden ring from the treasure in the Gold Haven. This was exactly what she thought she needed to complete a ritual she had read about in a book, that allowed the performer of the ritual go to any universe by using objects from their current universe that could characterize the universe they wanted to go to.

However, something went awry. By pure fate, the golden ring filled up into a golden coin, causing her to go to another universe than the one she intended to travel to. Based on the images that flashed across her eyes, and the appearance of the golden coin, it is possible she has been transported to the universe of Super Mario, another series the author has made fanfiction of.

This would mean Sonja has the power to hop across dimensions. She is likely to appear in a future book in the Super Mario fanfiction series. This would also mean that all three of these dimensions, maybe more, are linked by the existence of a multiverse.